Question

Assertion (A): The total number of species in an ecotone is more than those present in an adjoining area.

Reason (R): Ecotone is a sharp transition zone between two or more diverse communities.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

Explanation:

An ecotone is a transition zone between two or more communities, so it contains species from adjoining communities as well as some unique species. This is why species richness is greater in an ecotone.